In article ,
"Mark W. Lund, PhD" wrote:
Measuring the open circuit
voltage is not usually very useful, because it doesn't
take much active chemistry to show the full voltage. It takes
a lot of active chemistry to put out a few amps.

I routinely test AA alkalines using this method.

Alkalines have a much higher internal resistance so can't deliver much
current.

What sort of current would you expect to see from a fully charged NiMH AA
into a 20 amp ammeter?

--
*Why are they called apartments, when they're all stuck together? *

Dave Plowman London SW
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